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I have a 2000 GMC Jimmy Diamond Edition 4.3L V6. With my driving habits I can get about 305 miles per tank. I always reset my trip-odometer and when it gets to 275+ the fuel gauge is still reading 1/2 tank. So basically it won’t read anything below 1/2 tank. Is this a float problem & what’s the best way to repair this?
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I would say your fuel sending unit has a problem. the only way to fix it is to replace the fuel pump and sending unit.
I would recommend using an OE unit.C8-)+1 That would be my my suspicion too.
Here’s a good video that explains how to diagnose it: http://www.youtube.com/watch?v=SIR-quUzZwY
I’ve replaced a couple sending units on actually the same car type with the modular fuel pump assembly, which might be what’s in your truck. Both cars were 2001 Buick Centurys, which is wierd. I had access the the fuel pump assembly thru the trunk, so I didn’t even have to drop the tank. The part was fairly cheap, especially when compared to the entire module. Hopefully you run into this as well. Good luck.
http://shop.advanceautoparts.com/webapp … P2032_____
Here man. I hope the link works. It’s odd that it appears to come disassembled, but this may be what you are looking for, and might get you done for $25 instead of replacing the whole unit. Although when I look at the picture again, it doesn’t quite look like what I’m used to seeing from a GM sending unit. Just trying to save ya cash bro, so it’s an option. Best of luck.
If the access is easy to get to as suggested than great on the sending unit. But if the tank has to come down I would
recommend the the whole unit. You only want to be in there once.C8-)That video by Scannerdanner is great, though in your case I suspect a mechanical problem with the float.
+1 I agree it does sound like a sending unit issue which could be mechanical OR electrical but the only way to find out is to remove it and test it.
More than likely the fuel level sensor, or the float is getting caught up on something half way down.
I had the same problem with my 2001 Chevy s-10. I just made due until the fuel pump went out. Got it replaced and everything worked just fine.
I had the same problem with my 2001 Chevy s-10. I just made due until the fuel pump went out. Got it replaced and everything worked just fine.
I know you sold the truck, but this is a common problem with GM vehicles. GM fuel gauges are usually never that accurate. My 1974 Chevy trucks is always a bit off no matter what, it gives me a good idea where it is but it’s not dead on for sure. My dads 1972 Impala is the same way it will never read right on. On my 2008 Chevy Silverado, it was also off anytime it was below half of a tank. My moms 2012 Buick is even worse…it constantly reads lower than what is in the tank by a drastic margin. As a GM guy from a GM family, I can safely say that this is a very common problem.
I know you sold the truck, but this is a common problem with GM vehicles. GM fuel gauges are usually never that accurate. My 1974 Chevy trucks is always a bit off no matter what, it gives me a good idea where it is but it’s not dead on for sure. My dads 1972 Impala is the same way it will never read right on. On my 2008 Chevy Silverado, it was also off anytime it was below half of a tank. My moms 2012 Buick is even worse…it constantly reads lower than what is in the tank by a drastic margin. As a GM guy from a GM family, I can safely say that this is a very common problem.
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